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hot Jupiter

American  

noun

Astronomy.
  1. any of a class of large, hot, gaseous planets similar to Jupiter in mass but outside our solar system.


hot Jupiter Scientific  
/ hŏt /
  1. See under extrasolar planet


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

When a hot Jupiter passes in front of its star, astronomers see one dip in brightness.

From Science Daily • Jun. 1, 2026

WASP-43 b is a "hot Jupiter" type of exoplanet: similar in size to Jupiter, made primarily of hydrogen and helium, and much hotter than any of the giant planets in our own solar system.

From Science Daily • Apr. 30, 2024

Silicates are exceptionally common — all the rocky bodies in the solar system are made from them, and silicates have previously been detected in the atmospheres of hot Jupiter exoplanets before.

From Scientific American • Oct. 20, 2023

Luis Calçada, a science visualization artist who works with the European Southern Observatory, chose another hot Jupiter: Vega b.

From New York Times • Apr. 2, 2022

No thermal inversion and a solar water abundance for the hot Jupiter HD 209458b from HST/WFC3 spectroscopy.

From Nature • May 6, 2018

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